A TI{SA-KozakGAL4} DNA cassette has been inserted into Ufd4, replacing the almost all of the coding sequence (coordinates of deleted sequence are 2L:10282055..10290493 , release 6 genome). This results in a simultaneous knock-out of Ufd4 plus a knock-in of GAL4 that is expected to be expressed under the control of the endogenous regulatory sequences of Ufd4. The TI{SA-KozakGAL4} cassette was inserted via the CRISPR/Cas-9 drop-in technique, using a dsDNA donor vector with homology arms of length 200bp. The sgRNA sequences used to target the gene were: GTCGACATCGCCCATCTGTAAGG and GCGCTCCTTCATGATCTCTTCGG.